I just saw a documentary earlier this week called "The End Of Suburbia" that heavily featured Kunstler. I honestly knew everything he and the other people in the documentary were talking about, because I've been reading up on peak oil, the dangerous effects of climate change, and ways in which rising fuel prices are going to fuck up the ability of people to continue living in a suburban-sprawl type mode for a while. Nonetheless, he seems to be one of the main guys out there talking about it, and although I don't remember reading anything by him in particular, I'm sure I've at least run across his theories if not his articles. I liked his interviews the most out of everyone in the movie--he was really engaging.